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In-situ sonochemical formation of N-graphyne modulated porous g-C3N4 for boosted photocatalysis degradation of pollutants and nitrogen fixation.
Zhao, Junjie; Sun, Mingxuan; Liu, Wenzhu; Chen, Haohao; Huang, Xiangzhi; Gao, Yu; Teng, Huanying; Li, Ziyang.
Afiliación
  • Zhao J; School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
  • Sun M; School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China. Electronic address: mingxuansun@sues.edu.cn.
  • Liu W; School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
  • Chen H; School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
  • Huang X; School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
  • Gao Y; School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
  • Teng H; School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
  • Li Z; School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
Spectrochim Acta A Mol Biomol Spectrosc ; 320: 124629, 2024 Nov 05.
Article en En | MEDLINE | ID: mdl-38865891
ABSTRACT
Herein, Nitrogen-doped graphyne/porous g-C3N4 composites are firstly in-situ synthesized via the ultrasound vibration of CaC2, triazine, and porous g-C3N4 in absolute ethanol. A variety of characterizations are performed to investigate the morphology, microstructure, composition, and electrical/optical features of the obtained composites, such as transmission electron microscopy, scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectra, X-ray photoelectron spectroscopy, and so forth. It is found that N-doped graphyne with flexible folds lamellar structure is intimately attached to flake g-C3N4 in the as-prepared composites. An enlargement of 1.68 and 1.44 folds for the photocatalytic degradation of levofloxacin, rhodamine B, Methylene blue, and Tetracycline is realized by N-doped graphyne/g-C3N4 in comparison with that of pristine g-C3N4, respectively. In addition, the highest NH3 production rate attains 1.71 mmol⋅gcat-1⋅h-1 for N-doped graphyne/g-C3N4, which is 5.89 times larger than that of g-C3N4 (0.29 mmol⋅gcat-1⋅h-1). The improved mechanism of photocatalysis including higher photo-response and carrier separation rate is verified by transient photo-current, transient photo-potential, Mott-Schottky plots, Tafel plots, electrochemical impedance spectroscopy, turn-over frequency, photoluminescence spectra, and UV-vis diffuse absorption spectra, etc. Overall, the current study shows that N-doped graphyne synthesized from CaC2 and triazine is a useful decoration to modulate the photocatalytic features of g-C3N4, which can also be widely extended for in-situ modification of other photocatalysts.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido